/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package gov.nasa.ensemble.common.ui;

import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.swt.widgets.Control;

public class StructuredViewerUtils {

	/**
	 * Performs the update on the viewer's control's display thread. Properly handles disposed controls.
	 * 
	 * @param structuredViewer
	 * @param element
	 * @param properties
	 * 
	 * @see StructuredViewer#update(Object element, String[] properties)
	 */
	public static void update(final StructuredViewer structuredViewer, final Object element, final String[] properties) {
		final Control control = structuredViewer.getControl();
		if ((control != null) && (!control.isDisposed())) {
			control.getDisplay().asyncExec(new Runnable() {
				@Override
				public void run() {
					if (!control.isDisposed()) {
						structuredViewer.update(element, properties);
					}
				}
			});
		}
	}

}
